| 摘要 |
PURPOSE:To control the currents of the motor so that a tension share ratio does not change by mounting an armature current controlling amplifier to the field current controller of other motors except one motor in a plurality of the motors and controlling currents by external signals. CONSTITUTION:The total currents of currents flowing through each motor 5, 5A are controlled while the armature current controlling amplifier 11 amplifies current deviation signals between current reference signals outputted from a current reference arithmetical unit 1 and current detecting signals from a current detector 4 detecting effective currents to the motor 5 and corrects field current reference signals, and field currents are controlled by means of the field current controller 9 so that said current deviation signals reach zero. Accordingly, the armature currents of the motor 5 are controlled at value equal to current reference signals given by means of the current reference arithmetic unit 1. |
